"Opposition to him is so concentrated large blue states if he's at 47 [percent] on Election Day, he's at over 50 percent in every swing state, including Arizona and Michigan, and he's going to win reelection," he continued.

"If he's at 47 percent in the RealClearPolitics average, he's going to win reelection because he'll be at over 50 in the Electoral College. He might lose the popular vote by a point or two, but he'll win the Electoral College," he said.

Trump won the Electoral College in 2016 by flipping traditionally blue states such as Michigan, Wisconsin, and Pennsylvania.

Pollster Emily Ekins said on Monday that the past positions on gay marriage of former President Obama and Hillary Clinton would be disqualifying factors if either were running for president as a Democrat today.

Most Americans have confidence in special counsel Robert Mueller and congressional Democrats, as both investigate aspects of President Trump and his administration, according to a new Hill-HarrisX poll.